Corporate Responsibility

Our approach is to analyze every project individually to determine its economic, safety and environmental impacts over the life of the project


Two types of oil and gas activities have been associated with seismic events: disposal of produced water back into an underground formation via saltwater disposal wells and hydraulic fracturing.

Cimarex began monitoring seismic activity in our Mid-Continent operations in 2012 with a set of linked seismometers, also known as a seismic array. Any seismic activity with a magnitude of 2.0 or higher triggers our seismicity protocol, which causes operations to be minimized or stopped. Certain areas where disposed water has been injected into the Arbuckle formation in Oklahoma have experienced increased seismic activity. Neither we nor our third-party vendors dispose of produced water into the Arbuckle formation.

seismic array map

Cimarex continues to maintain transparency with all state and federal authorities. In Oklahoma, we actively communicate with the Oklahoma Corporation Commission (OCC), the state government agency that oversees the oil and gas industry in Oklahoma, and we have complied with all of the agency’s data requests. We provide information from our seismic array to the Oklahoma Geological Survey (OGS) and also work with the OGS and the OCC to establish best practices. We continue to work closely with these groups analyzing seismic events. In 2015, we implemented a protocol to address seismicity associated with hydraulic fracturing.

In 2016, we began monitoring seismic activity in the Permian region through seismic array systems. Results of our seismic arrays in the Permian region indicate that seismic events in the region are fewer and less intense in scale than the Mid-Continent region. Should we see any seismic events with a magnitude of 2.0 or higher occur during our operations in the Permian region, we implement a similar protocol to our Mid-Continent region operations. We are actively participating in Permian industry group discussions on the topic as well as sharing information with the Texas Railroad Commission, the state government agency that oversees the oil and gas industry in Texas, and State Seismologist.

Richter Scale Magnitude Effects
1.0-1.9 Not felt or felt rarely
2.0-2.9 Felt slightly by some people; no damage to buildings
3.0-3.9 Often felt by people but rarely causes damage; shaking of indoor objects can be noticeable